The Doctor‘s NightGuard dental protector is a simple affordable solution for protecting your teeth from the detrimental effects of nighttime teeth grinding and bruxism. It consists of a moldable plastic mouth guard that comfortably fits over your upper teeth. The Doctor‘s NightGuard provides similar protection as dentists’ night guards. The patented design creates a cushion between the upper and lower teeth that absorbs the force of grinding. Comfort & Protection Guaranteed.